. >> this morning president obama offered words of comfort at an interfaith service. >> as you begin this long journey of recovery, your city is with you. your commonwealth is with you. your country is with you. we will be with you as you learn to stand and walk and yes, run again. of that i have no doubt you will run again. >> the president and first lady visited massachusetts general hospital, meeting with many of those injured as well as hospital staff. >>> security has been tightened. we give you a live look outside the shark tank in san jose. the sharks are set to play the minnesota wild less than 30 minutes from now. we're told security here is a heighten. we know more police officers will be on duty. fans may be patted down and checked with wands. bomb sniffing dogs will be used before the game. >>> can new high flying technology improve crowd security? >>> now to continuing coverage of the deadly fertilizer plant explosion in texas. virtually everyone in the close knit town of west has been affected in some way. search teams spent the day combing through destroyed buildings i